Glen McNamara leaves the NSW supreme court in February. Photo: Dominic Lorrimer Jamie Gao was last seen by his girlfriend on May 18, 2014. Photo: Facebook

Glen McNamara’s daughter gives evidenceMcNamara: ‘He said he would kill you girls’

Three days after former police officer Glen McNamara allegedly murdered a Sydney student he appeared to use counter-surveillance techniques while driving home from the pub, a court has heard.

Detective Sergeant Adam Bird told the NSW Supreme Court that, having been given the task of keeping tabs on Mr McNamara’s movements on May 23, 2014, he followed the 56-year-old home from the Crown Hotel in Revesby.

“His actions in driving were consistent with counter-surveillance techniques,” Detective Bird told the court on Wednesday.

He said the former police officer had driven around the block when there was no apparent reason to do so, including going down a quiet laneway.

“The reason you would do that [when conducting counter-surveillance] is because a laneway is quiet and usually the only people driving down there have a specific reason to be there.”

Detective Bird said when he realised the former officer was using counter-surveillance techniques he stopped following him.

The incident occurred three days after Mr McNamara and fellow former police officer Roger Rogerson, 74, allegedly shot 20-year-old Mr Gao twice in the chest at close range in a south-west Sydney storage shed.

Mr Gao’s body was found wrapped in blue plastic and a silver surfboard cover floating off the coast at Cronulla on May 26.

The Crown alleges Mr McNamara and Mr Rogerson were involved in a joint criminal enterprise to kill or cause serious bodily injury to Mr Gao and rob him of a large quantity of the drug ice, which they had allegedly promised to buy from him.

Both men have pleaded not guilty to charges of murder and commercial drug supply.

Later on Tuesday, a crime scene expert, Phillip Austin, told the court there was no conclusive evidence of blood in the storage shed.

An initial luminol test had found possible traces of blood on the floor of the garage near the roller door, and on the back rest of an office chair stored in the shed, he said. However, subsequent testing had been negative for blood in these locations.

Earlier, Detective Bird, who was also involved in a search of Mr Rogerson’s home, rejected suggestions that gun-shot residue found on clothing owned by Mr Rogerson could have been the result of accidental evidence contamination by police.

“I’ve viewed the search warrant video and it does not happen,” he said.

The case continues.

This story Administrator ready to work first appeared on Nanjing Night Net.